Sheet-metal roofing



(No Model.)

F. G. CALDWELL. SHEET METAL ROOFING.

No. 403,415. Patented Ma 14, 1889.

f jw/vegivz' K217?) Pga 0% UNITED STATES PATENT. OFFICE.

FRANK G. CALDIVELL, OF IVHEELING, VEST VIRGINIA.

SHEET-METAL ROOFING.

SPECIFICATION forming part of Letters Patent No. 403,415, dated May 14, 1889.

Application filed October 16, 1888. Serial No. 288,218. (No model.)

To all whom it may concern:

Be it known that I, FRANK G. CALDWELL, a citizen of the United States, residing at IVheeling, in the county of Ohio and State of est Virginia, have invented new and useful Improvements in Sheet Metal Roofing, of which the following is a specification.

The invention relates to metallic roofing wherein sheet-metal plates are applied to and engaged with the longitudinal edges of separated or spaced sheathing-boards secured to purlins.

The objects of this invention are to improve such character of roofing, to provide novel caps between the separated wooden sheathingboards, which not only serve as gages for properly spacing the sheathing-boards as they are secured to the purlin, but also receive the flanged edges of the sheet-m etal roofing-plates, and to provide a novel construction whereby the flanged roofing-plates can be conveniently and easily inserted lengthwise into engagement with independent metal caps and the longitudinal edges of the wooden sheathingboards without the flanges of the roofingplates touching the wooden boards, but, on the contrary, having sliding contact with the smooth surfaces of the independent caps located between the spaced wooden boards.

To such ends the invention consists in the novel construction of the roofing-plates and the independent metal caps to engage beveled and undercut sheathing-boards, as hereinafter specifically described and claimed, reference being made to the accompanying drawings, in which- Figure 1 is a perspective sectional view of a port-ion of sheet-metal roofing embodying my invention; Fig. 2, a detail perspective view of one of the metal caps, and Fig. 3 a detail perspective view of one of the sheet-metal roofing-plates.

In order to enable those skilled in the art to make and use my invention, I will now de.-. scribe the same in detail, referring to the drawings, where the numeral 1 indicates a purlin, of which there may be any number, and 2 the sheathing-boards, each of which has its opposite edges beveled, as at 3, and is provided in its lower side with rectangular under-cuts or rabbets 4. The independent caps are each composed of a rectilinear sheet of metal having a substantially flat and extended head, 5, and bent inwardly to form upper walls, 6, that project toward each other, and are respectively bent outwardly to form divergent wings 7, leaving a contracted space or mouth, 8, between the walls 6, from whence the divergent wings extend. The metallic roofing-plates 9 are substantially flat on their upper surfaces, and at each side are bent inwardly to form beveled walls 10, which are turned laterally in opposite directions to provide substantially horizontallyextending flanges 11, the walls 10 and flanges 11 corresponding approximately to the angles formed by the divergent wings 7 andwalls 6 of the caps.

A sheathing-board 2 being secured to the purlin, a metal cap is inserted so that it enters the under-cut or rabbet 4, and then another sheathing-board is secured to the purlin so that its beveled side enters the angle formed by the wall 6 and wing 7 of the cap, and so on across the superstructure of the roof. By this means the metal caps, being of substantially similar size and form, serve as gages to properly space the sheathing boards, thereby avoiding accurate measurements and skilled workmanship. The divergent wings of the caps may be secured to the beveled edges 3 of the sheathing-boards, if desired, by nails or otherwise, and when the caps are placed in position between the sheathingboards, as explained, the metal roofing-plates are inserted lengthwise by sliding them into engagement with the caps, so that the beveled walls 10 rest on the divergent wings 7 and the lateral flanges 11 enter between the top walls, 6, and the heads 5 of the caps, as clearly shown in Fig. 1. The independent caps being placed in position between the sheathing-boards, as shown, the roofing-plates, when inserted, have no contact with the wooden boards at the bevels 10 and flanges 11, but, on the contrary, have a sliding contact with the smooth metallic surfaces of the caps, thereby enabling the roofing-sheets to be inserted lengthwise into place with far greater facility and convenience than where the flanged roofing-plates are inserted lengthwise into direct engagement with beveled sheathing-boards.

boards having their opposite side edges beveled and rabbeted, thevcaps each composed of a sheet of metal having a head, inwardly-extending top walls and diverging wings, and the roofing-plates having side bevels and lateral flanges engaging the top walls and wings of the caps, substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANK G. CALDWELL. Witnesses:

W. F. PETERSON, GEO. T. BELL. 

